In a 2007 Wall Street Journal interview, FTC economist Peter Vander Nat stated "If people are buying because they want to use a company’s products, those sales can count as retail"

Matrix plans often have a maximum width and depth. When all positions in a representative's downline matrix are filled (maximum width and depth is reached for all participants in a matrix), a fresh matrix Watkins may be started. Like Uni-Level plans, representatives in a matrix earn unlimited commissions on checked levels of volume with minimal sales quotas.